package com.sifang.controller;

import com.sifang.domain.Result;
import com.sifang.domain.User;
import com.sifang.service.IUserService;
import com.sifang.utils.JwtUtil;
import com.sifang.utils.Md5Util;
import com.sifang.utils.ThreadLocalUtil;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.validation.constraints.Pattern;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private IUserService iuserService;
    @Resource
    private StringRedisTemplate stringRedisTemplate;

    //注册
    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{2,10}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password){
        //查询用户
        User u = iuserService.findByUserName(username);
        if(u==null){
            //没有占用
            //注册
            iuserService.register(username,password);
            return Result.success();
        }else{
            //占用
            return Result.error("用户名已被占用");
        }

    }

    //登录
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{2,10}$") String username,@Pattern(regexp = "^\\S{5,16}$") String password){
        //根据用户名查找用户
        User loginUser = iuserService.findByUserName(username);
        //用户是否存在
        if (loginUser==null){
            return Result.error("用户名不存在");
        }
        //密码是否正确
        if(Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);

            //把token存储到redis中
            ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
            operations.set(token,token,1, TimeUnit.HOURS);

            return Result.success(token);
        }
        return Result.error("密码错误");
    }

    //获取用户信息
    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/){
        //根据用户名查询用户
//        Map<String, Object> map = JwtUtil.parseToken(token);
//        String username = (String) map.get("username");

        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");

        User user = iuserService.findByUserName(username);
        return Result.success(user);
    }

    //更新
    @PutMapping("/update")
    public Result update(@RequestBody User user){
        iuserService.update(user);
        return Result.success();

    }

    //更新头像
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        iuserService.updateAvatar(avatarUrl);
        return Result.success();
    }

    //更新密码
    @PatchMapping("/updatePwd")
    public Result updatePwd (@RequestBody Map<String,String> params, @RequestHeader("Authorization") String token){
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        if(!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要参数");
        }

        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser = iuserService.findByUserName(username);
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码填写错误");
        }
        if(!newPwd.equals(rePwd)){
            return Result.error("两次填写密码不一致");
        }

        //更新
        iuserService.updatePwd(newPwd);
        //删除redis中对应的token
        ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);

        return Result.success();
    }


}
